Embroidering-machine.



M. SGHOENPBLD;

EMBEOIDERING MACHINE.

APPLICATION FILED FEB. 16, 1910.

Patented A111130, 1912. I

2 SHEETS-SHEET 1.

I y z, www 5i:

M. SGHOBNFELD.

v EMBEOIDERING MACHINE. APPLICATION ILBD 113,16, 1910.-

1024867, Y Patented Apr.30,1912.

wbb/Lago@ I Syl/ua O6 im tm" M@ jm M M l MORRIS SCHOENFELD, 0FRORSCHACH, SWITZERLAND.

EMBROIDERIN G-IVIACI-IIN E.

Specification of Letters Patent.

Patented Apr. 30, 1912.

Application filed February 16, 1910. Serial No. 544,197.

To @ZZ whom it may concern Be it known that I, MORRIS SCHOENFELD, acitizen of the United States, and a resident of Rorschach, in the Cantonof St. Gall, Switzerland, have invented certain new and usefulImprovements in Embroidering-Machines, of which the following is aspecification.

My present invention relates to improve-- ments in embroidering machinesof the large type wherein several hundred needles are adapted to operatesimultaneously in the production of embroidery upon a fabric stretchedupon a tambour frame. Heretofore it has been customary to construct theembroidering machine frame of end standards connected by longitudinalbeams, generally four in number, two in front of the machine and two atthe rear, upon which the various tools, such as needle bars, tension,take up, etc., and their operating parts were directly supported, thebeams being disposed near the said tools. In such constructions the longbeams, carrying the great weight of such mechanisms were necessarily ofconsiderable size and they therefore offered considerable obstruction tothe embroidery surface, making it difficult for the attendants to seethe fabric and attend to the various devices. In such machines it hasbeen impracticable to have more than two rows of embroidering devices,one above the other, because an increase in the rows meant an increasein the number of such heavy beams, which, owing to the great weight,prevented such, and the increased obstruction of the embroidery surfaceincreased the already objectionable features of such machines. I haveovercome these objections by revolutionizing the entire construction ofembroidering machines making it possible to increase the number of rowsof embroidering devices to say six rows, and at the same time have amuch clearer view of the embroidery surface and also a lighter runningand more rigid machine which can be made even longer than formermachines.

In carrying out my general objects I have produced certain new types offrames which I have shown and described in certain applications forpatent filed by me on the 16th day of February, 1910, and seriallynumbered 544195, 544193, 544198 and 544199. Furthermore, in carrying outmy plan of general improvement I have provided certain novelimprovements in the embroidering mechanisms such as the needle mechanismand shuttle mechanism which are set forth in my co-pending applicationSerial Number 544198 and tiled on the 16th day of February, 1910. Inthis latter case I have shown radical improvements in the needle barmechanism, whereby a movable fram-e is formed of two or more of thesuperimposed needle bars, and a novel operating mechanism providedtherefor. I have also shown in said case a shuttle mechanism.

The object of my present invention is to provide simple mechanismwhereby the same broad objects of the said case will be carried outandadditional advantages se cured.

In the present case I have utilized a movable frame structure formed byrigidly uniting two or more of the vseveral rows of needle bars whichframe is mounted upon the machine frame so that it may be reciprocatedlaterally of the machine to cause the needles to stitch the fabric. Thisframe structure is so supported that there is no material obstruction tothe embroidery surface. In the present case I have employed a drivingmechanism for this movable frame embodying upright reciprocatingelements, operated from a common source of operation and connectingdevices for changing the operating force of the upright reciprocatingelements into a lateral movement of thel said movable frame. This isdone in such a way that perfect parallelism in the operation of themovable frame is secured. Furthermore I have provided the same generalfeatures in the operation of certain other devices, such as detents,bor-ers, etc. I have also embodied certain improvements in the shuttlemechanism whereby I not only preserve the advantages of the constructionin my said case Serial Number 544198 but I so mount the shuttlemechanism that the same may be bodily moved laterally of the machine tofacilitate in the placing of the fabric in position to be embroideredand in positioning the shuttle mechanism with relation to the fabric.

Other advantages will be apparent from the detailed description of oneembodiment of my invention hereinafter.

In the drawings forming a part of this application, Figure 1 is a frontelevation of one end of an embroidering machine embodying myimprovements, the left hand f ers 9, and take up 10 are mounted, bymeansend, Fig. E2 is a cross section of the machine, showing the variousmechanisms, Fig. 3 is a cross section of the front half of the machineshowing the needle mechanism, Fig. 4t is a horizontal sectional viewshowing certain details of the mechanism, and Fig. 5 is a similar viewshowing a modification in the connection of the needle bars with theirconnecting elements.

I have shown my improved mechanism applied to al machine of preferredconstruction but the same may be used in various constructions.

In the machine herein shown the frame consists of end standards l and 2,at the ends of the machine which are connected in the front bylongitudinal beams 3 and e, at the bottom and top and in the rear bylongitudinal beams 5 and 6, the two sets of beams being spacedsufficiently to permit the fabric 7 to be operated between them upon atambour frame, and to permit certain mechanisms to be mounted betweenthe pairs of beams. I have shown these longitudinal beams as commercialforms of metal which, together with the end standards form a rigid framestructure with the longi'tudinal beams so disposed that they offer noobstruction to the embroidery surface. Upon this frame structure ismounted the various mechanisms for the production of embroidery, some ofthe devices being mounted stationarily, such as the tension, take up,etc., while other devices such as the needle bars, shuttles, etc., aremounted to have a reciprocating movement laterally or longitudinally ofthe machine as the case may be.

It may be here stated that the fabric 7 is stretched upon any knowntambour frame and may be operated by any well known mechanism toposition the fabric in front of the needles for each stitch, themechanism for which is here omitted to simplify the present case.

In the present case I have shown an improved mechanism for operating theneedle bars, and I have also shown other embroidering tools operated bysimilar mechanism and it will be apparent to one skilled in the art thatstill other tools may be operated in a similar manner and it is deemedunnecessary to show every possible of embroidering tools which may be'ope ated by simi lar mechanism.

In the present case I have shown certain devices, which though embodyingmovable parts have a fixed position (except for adjustability) upon themachine, mounted on stationary elements forming a part of the frame workof the machine, such as the intermediate posts or standards 8, connectedbetween the longitudinal beams 3 and 4, of the f ame. Such devices asthe tension rollof brackets 11, between the posts 8 at the ends of themachine or such other intermediate positions as may be desired. Thesedevices may be actuated by mechanism similar to that used to actuate theneedle and other devices as will appear hereinafter or they may beactuated by mechanism similar to that shown in my co-pending applicationreferred to.

The needle mechanism, comprising an important feature of the presentcase is a decided improvement over the long continued practice ofmounting` the needle bars upon long heavy beams, near the needle bars.In the present construction I employ a number of needle bars arrangedone above the other, which may be increased in number over formerpractice (as many as six being here shown) and two, and preferably all,of these needle bars are connected with each other to form a rigidwhole, a frame preferably in the nature of a series of parallelograms,and this frame is so mounted and guided upon the machine frame as to bemovable laterally of the machine to cause the fabric to be stitched bythe many needles. The frame thus formed is reciprocated by a novelmechanism which operates the same in proper parallelism, so that theentire needle mechanism will operate uniformly.

The many needles l2 are suitably secured in any well known manner to theneedle bars 13 which latter are preferably arranged longitudinally ofthe machine and running substantially the length thereof and arearranged one above the other. The needle bars 13 are shown with blocksll which are bolted by bolts 16 to members which conneet two or more ofthe several needle bars in a single unit. These coinnections arepreferably in the nature of upright metal sections 15 and the bolts l@which secure the needle bars thereto engage in slots 17 whereby theneedle bars may be adjusted in their connection with the uprights, tocause the needle bars to operate more or less remote from each other. InFig. 3 I have shown only two of the needle bars, it being understoodthat they are multiplied to conform to the other views in making the maschine, or the number may be altered as desired. These uprights l5 aremounted to move laterally of the machine and preferably in such a waythat the movement will be a straight reciprocating movement so that theneedles will go in and out of the fabric in a direct` line, and I preferto connect the operating mechanism to these uprights.

Upon the lower longitudinal beam 3 I have constructed journals 1S, whichcarry a lateral shaft 19, while on the upper beam I have constructedsimilar sockets or journals 20, which likewise carry a lateral shaft 21and the shafts 19 and 21 are preferably in vertical alinement. Theupright. connecting member 15 has sockets 22 on its lower end andsimilar sockets 23 on the upper end which slide freely upon the shafts19 and 21, and guide the whole movable needle frame in a directionlateral of the machine and fabric.

It is to be understood that t-he upright 15 is duplicated at theopposite end of the machine and in long machines I prefer to duplicatethe same at regular intervals throughout the machine whereby the weightof the various needle bars will be carried at various pointsintermediate of, as well as at, the ends. Otherwise they would have tobe made very strong, or they would sag or the old style heavy beamconstruction would have to be resorted to.

The power for driving the various mechanisms is distributed throughoutthe machine by a longitudinal sha-ft 24 which I have shown near the baseof the machine and from which the vario-us mechanisms are preferablydriven by means of a number of cams disposed along the shaft and theperipheries of which cams are shaped and proportioned according to therequirements of the various mechanisms which they are required tooperate.

In Figs. 1 and 3, I have shown very clearly the mechanism by which theneedle bar frame is operated. I have mounted a bellcrank lever 25 upon asuitable axle 26 to rock laterally of the machine; and one arm of thislever is connected by a link 2T to the upper p-art of the upright 15,the link being fulcrumed to the bellcrank lever and upright. This samearrangement is duplicated at the lower part of the machine as will beseen, to cause the needle bar frame to move in parallelism. The otherends o-f the two bellcrank levers 25 are connected by a pitman 2S, whichis shown vertically disposed. To the pitman 2S at 29 is fulcrumed anoperating rod 28FL which extends downwardly and is provided with aroller 30 which engages with `a cam 31 on the operating shaft- 24. Therod 28a is fulcrumed to a short arm 32 which rocks on a support andretains the lower end ofthe rod in place. A spring 34 pulling down onthe arm 32 retains the roller 30 in continual contact with cam 31. Thisarrangement is duplicated at the opposite end of the machine and itI maybe duplicated at intermediate points to furnish enough power to drivethe needle mechanism and without distort.- ing the needle bar frame.. Inother words, preserve parallelism in the operation of the needlemechanism.

I have shown detents for pressing upon the fabric and I prefer to mountsuch upon the uprights 15 which carry the needle bars,

making duplication of parts unnecessary. This combining, in the case ofneedles and detents is possible because their time 'of movement anddirection are more or less similar.

I have shown the detent fingers 35 mounted to press the fabric againstthe shuttle tracks and they are shown carried upon shafts 36, which arejournaled in sockets 38 movably bolted to the uprights 15 below theneedle bars. The springs 39 press the detents toward the fabric and theshafts are retained in their sockets by pins 37 on their outer ends. Thedetents are adapted to be moved with the uprights 15 to cause the detentfingers to engage the fabric before the needles enter the fabric. Themovement of the needle device causes the detent fingers to press thefabric and the compression of the springs 39 permits the detent fingersto remain pressed against the fabric while the uprights continue untilthe needles receive their full stroke. Upon the retracting of the needledevice the detents remain in contact with the fabric until the needlesare withdrawn, when the extreme thrust of the needle device .willwithdraw the detent fingers sutlicient to permit the fabric to bereposit-ioned for the next stitch.

I have shown other embroidering tools operating in the same way as theneedle bars. In the front of the machine I have shown such devices asthe borers 4() mount- 'ed in longitudinal rows on bars 41, similar toand below the needles, the function of which is well known in t-he art.These bars 41 are mounted adjustably upon upright connecting members 42,preferably in the same way that the needle bars are mounted on theiruprights 15. These members 42 are mounted on the machine frame similarto the needle bar frames and are operated by similar mechanism. I havenot shown the complete mechanism for operating the members 42 as it isthe same as the needle mechanism and it would only be a duplicationthereof. On the rear side of the machine I have shown stupfels 44,mounted on bars 45, which in turn are mounted on uprights 46, and whichstupfels are adapted to operate on the fabric from the rear. Th-est-upfel bars and their uprights are like the needle bars and theiruprights, are similarly mounted on the frame and operated by similarmechanism.

I have shown a novel shuttle mechanism disposed at the rear side of themachine, which is shown in Figs. 2, 4, and 5. The shuttle tracks 47 arepreferably of the same form as those shown in my application SerialNumber 5441978 and are adjustably mounted by bolts 48 which engage inslots 49 on the uprights 50, which connect the several shuttle tracks ina similar manner to the upright which connect the several needle bars.This forms a rigid frame of the several shuttle tracks which aredisposed one above the other corresponding to the disposition of theneedle bars. The frame constituted b y the shuttle tracks and theiruprights are adapted to be moved, laterally, to withdraw the shuttlemechanism sufficient to permit the fabric to be placed. The uprights 50are provided at bottom and top with sockets 5l, which are guided uponthe shafts 52 mounted laterally in sockets 53, similar to the mountingof the uprights l5. As it is only necessary to move the shuttle trackswhen changing the fabric it is preferably done man ually and the shuttletrack frame is retained in fixed position by set screws 54 which engagethe shafts 52, to prevent the frame from moving when the shuttlemechanism is in operation. The shuttles 55 are guided in one groove ofthe shuttle track while the fingers of the drive bar 56 reciprocate theshuttles similar to my case number 54%198. The upright shafts 57 arejournaled in sockets 58, on the machine frame and are adapted to beoscillated as will appear. The shafts 57 are provided with collarscarrying arms 59, the collars being vertically adjustable by means ofset `screws G0 upon the shafts. The arms 59 are connected with theseveral shuttle drive bars 5G by means of links 61 which are fulcrumedto the arms 59 and to the shuttle drive bars. The lower end of the shaft57 is provided with an arm G2 (see Fig. 4t) which has a slotted end 63.There is a lever (Si, fulerumed at on a suitable support, which carriesa pin 66 engaging in the slot of'the arm 62,' which latter it is adaptedto rock. rlhe lever 64 is provided with a roller 67 which is retained incontact with the cam 68 on shaft 2st by means of a spring G9.

The revolution of the cam (38 with the main opeigating shaft will,through the lever Gl: and arm G2, oscillate the shaft 57, which in turnwill reciprocate the shuttle drive bars by means of the arm and linkconnections therewith. The shifting of the shuttle tracks when placingthe fabric will not require any disconnection of the remainder of theshuttle mechanism. The screws 54e are loosened and the shuttle trackframe moved back from the fabric. The present mechanism is susceptibleof use for other embroidering tools and changes may be made withoutdeparting from the scope and spirit of my invention.

Having described my invention what I claim is;

l. An embroidering machine comprising a longitudinal stationary frame,embroidering elements carried by longitudinally disposed superimposedcarrying members, and a plurality of upright members uniting said1,024,8efz

carrying members in arigid movable frame, said upright members beingdisposed at intervals along the embroidering machine, stationarylongitudinal members disposed free of the embroidering surface, forsupporting said upright members and upright reciprocating driving meansadapted to operate the said movable frame.

2. An embroidering machine comprising a longitudinal stationary frame,embroidering elements carried by longitudinally dis` posed superimposedcarrying members and a plurality of upright members uniting saidcarrying members in a rigid, movable frame, said upright members beingdisposed at intervals along the embroidering machine, stationarylongitudinal members disposed free of the embroidering surface, forsupporting said upright members, and levers mounted on the stationaryframe adapted to reciprocate said movable frame and uprightreciprocating elements adapted to operate the movable frame through saidlevers.

3. An embroidering machine comprising a longitudinal stationary frame,embroidering elements carried by longitudinal superimposed carryingmembers and a plurality of upright members uniting said carrying membersin a rigid, movable frame, said upright members being disposed atintervals along the embroidering machine and supported by saidstationary frame, levers mounted on the stationary frame and adapted tooperate on the upper and lower p0rtions of the movable frame, to movethe same laterally of the machine, and upright reciprocating means foroperating said levers.

e'. An embroidering machine comprising a stationary frame, embroideringelements and a movable frame mounted to be movable laterally of thestationary frame and embodying a plurality of longitudinal carryingmembers for the embroidering elements, laterally swinging bellcranklevers on the stationary frame connected with the upper and lowerportions of the movable frame, pitmen connecting the bell-crank levers,a power shaft and operating rods for the pitmen, operated from saidpower shaft.

5. An embroidering machine comprising a longitudinal stationary frame,embroidering elements carried by longitudinal superimposed bars, and aplurality of upright supporting members uniting said bars in a rigid,movable frame, said u-pright meinbers being disposed at intervals alongthe embroidering machine, shafts by which the upright members aresupported and laterally guided on the stationary frame, levers on thestationary frame adapted to opcrate on the upper and lower portions ofthe movable frame to reciprocate the same laterally of the machine andupright reciprocating means for operating t-he levers.

6. An embroidering machine comprising a longitudinal stationary frame,embroidering elements, such as needles, carried by longitudinalsuperimposed bars and a plurality of upright supporting members unitingsaid bars in a rigid, movable frame, other embroidering elements, suchas detents, carried by said upright members, said upright members beingdisposed at inter'- vals along the embroidering machine, stationarylongitudinal members disposed free of the embroidering surface, forsupporting said upright members and means for reciprocating said movableframe.

7. An embroidering machine comprising a longitudinal stationary frame,longitudinal superimposed shuttle tracks, upright supporting membersuniting a plurality of said tracks in a rigid, movable frame anddisposed at intervals along the machine, stationary longitudinal membersdisposed free of the embroidering surface, for supporting said uprightmembers, said upright members being supported Inova-bly upon the saidlongitudinal supporting members whereby the shuttle tracks may be movedtoward and from the fabric.

8. An embroidering machine comprising a stationary frame embodying endstandards and upper and lower 'longitudinal beams, movable uprightsupporting members support-ed on said upper and lower longitudinal beamsby guiding shafts and disposed at intervals between the end standardsand a plurality of superimposed longitudinal shuttle tracks rigidlysecured to said movable upright supporting members.

9. An embroidering machine comprising a stationary frame embodying endstandards and upper and lower longitudinal beams, movable uprightsupporting members supported on said upper and lowerlongitudinal beamsby guiding shaft-s and disposed at intervals between the end standardsand a plurality of superimposed longitudinal shuttle tracks rigidlysecured to said movable upright supporting members, shuttles travelingin said tracks, shuttle drives and upright oscillating shafts havingmeans for operating the several shuttle drives.

l0. An embroidering machine comprising a stationary frame, uprightsupporting members, shafts by which the upright members are laterallyguided on the stationary frame, shuttles, shuttle drives, longitudinalshuttle tracks adjustably mounted on said upright members, an uprightoscillating shaft having means for operating the several shuttle drives,said operating means being adjustable, whereby adjustment may be made inthe shuttle drives to permit adjust-ment of the several shuttle tracksand means for oscillating said shaft.

Signed at St. Gall in the Canton of St. Gall, Switzerland, this 3rd dayof February 1910.

MORRIS SCHOENFELD.

Witnesses ALBERT PHILLIPS, RANDALL ATKINSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

